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Fonds comprises the records of William Edward Maclellan and his family's records, including those of including William Edward and Margaret Jane (Mackenzie) Maclellan; Edward Kirkpatrick and Helen Stewart (Mackay) Maclellan; Robert (Bob) William and Delphine Caroline (Wallace) Maclellan; Jean Stewart Maclellan; Robert William Maclellan; and David Kirkpatrick Stewart Maclellan. Record types include correspondence, photographs, films, newspaper clippings, poems, certificates, booklets, periodicals, notebooks and genealogical charts.

Collection contains both original records and reproductions of materials related to Reverend Thomas McCulloch. Items include a glass plate etching of McCulloch, microfilm copies of his books, a sample of his shorthand, a ticket to a lecture given by McCulloch, and correspondence. The collection also includes a microform copy of a thesis written by a Dalhousie student about McCulloch.